Prelined container having multiple cells



Nov. 11, 1952 R. M. BERGSTEIN PEELENED CONTAINER HAVING MULTIPLE CELLSFiled Jan. 24, 1945 4 Sheets-Sheet l @www MN.

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' A T To R N EYS GJZ Patented Nov. 11, r1952 PRELINED CONTAINER HAVINGMULTIPLE CELLS Robert Morris Bergstein, Cincinnati, Ohio, assignor toRobert Morris Bergstein and Frank David Bergstein, trustees ApplicationJanuary 24, 1945, Serial No. 574,384

6 Claims.

Folding cartons which are prelined either with bags or with tubes havecome into widespread use in the packaging eld. In my Patent No.2,099,257 dated November 16, 1937, I have shown and described a bagortube-lined carton having four body Walls, and in Patent No. 2,250,249dated July 22, 1941, I have shown a structure in which the carton hassix body walls. My Reissue Patent No. Re. 20,789 dated July 12, 1938,relates to methods of making prelined cartons; and my Patent No.2,166,388 dated July 18, 1939, relates to machinery for the purpose.Reference to these patents is made for details of structures, methodsvand machines employed in part in connection with this invention.

My present invention provides cartons or containers in fiat folded orknocked down form each having a plurality of tubes or bag linerstherein. It is thus an object of the invention to provide prelinedcontainers having two or more individual cells or compartments therein,which may be employed either for the packaging of different incrementsof the same contents or for the packaging of contents of diversecharacters, or of substances designed for ultimate combination but whichmust be maintained separate during storage and shipment. It is a furtherobject of the invention to provide individual liners and cells which maybe of different types of material Where specific protectivecharacteristics are desired for differing products packed in thecontainer.

Another object of the invention relates to the provision of structuresin which the individual cells may be sealed, either separately or in asingle operation so that each cell, or as many as desired, will initself constitute an hermetic enclosure for its contents.

Anotherobject of the invention is the provision of a lined structurehaving multiple cells so constructed and arranged as to permit one cellat a time to be opened forthe removal of its contents Without disturbingthe sealed condition of the remaining cells, so that the freshness 'ofremaining increments is preserved. f Another object of theV invention isthe pro- Vision of processes and mechanism whereby such multi-linedcontainers can be produced continuously at high speed and at lowmanufacturing and assembly cost.

' These and other objects of lthe invention which will be set forthhereinafter or will be apparent to one skilled in the art upon readingthese specifications I accomplish by that construction and arrangementofparts, and by those methods and mechanisms of which I shall now describecer. tain exemplary embodiments. Reference is made to the accompanyingdrawings wherein:

Figure l is a diagrammatic representation of apparatus for making acomposite liner structure.

Figure 2 is a plan view of a structure so made.

Figure 3 is a transverse sectional view thereof.

Figures 4, 5 and 6 are diagrammatic views of various steps in closingone end ofthe tubes making up the liner structure; Y

Figure 7 is a representation of a carton blank of the so-called sixsided form.

Figure 8 shows the carton blank tubed about the liner structure ofFigure 2. i

Figures 9 and 10 are cross-sectional views of the structure of Figure 8respectively in the par-` tially and fully erected conditions.

Figure 11 is a perspective view of the lined carton.

Figure -12 is a perspective view of another form of composite linerstructure.

Figure 13 is a plan view of a four sided carton blank. f

-Figure 14 is a plan view of the'blank of Figure 13 tubed about theliner structure of Figuret12.`

Figures l5 and 16 are cross sectional views of the lined carton ofFigure 12 respectively in the partially and fully erected conditions. t

Figure 17 is a diagrammatic elevational view of amechanism for makingyet another formk of composite liner structure. Y

'Figure 18 is a perspective view of forming and gluing means which maybeused in connection with the mechanism of Figure 17.

Figures 19 and 20 are cross-sectional views of the composite linerstructure formed by the mechanism of Figures 17`and 18 respectively inpartially and fully expanded conditions.

Figure 21 is a perspective View of a lined carton showing anoperation'in closing and sealing the composite liner.

Figures 1 to 11 deal with the :formationr of a triple-celled compositeliner structure and the formation of a lined carton using such astructure. In Figure 1 I have shown diagrammatically an apparatus havinga framework I on which are three backstands/Z, 3 and 4 supporting therolls 5, 6 and 'I of suitable bagor tube-forming material in strip form,the strips being indicated at 8, 9 and l0. As the strips aredrawn'forward, each has applied to it along'one edge'a strip of adhesivefor a longitudinal seam.V Pans, and roll applicators .for the adhesiveare indicated atll,l2andl3.

At the points marked i4, l5 and I6 I provide bag tube formers ofordinary type which tube the several strips individually and bring theedges of each strip into lapping relationship to form the longitudinalseams as will be readily understood.

The bag tubes, now indicated at 8a, 9a and 10a are superposed and ledthrough a common pair f draw rolls Il and i8. After the formation of thebag tubes, however, and before they are superposed, areas of adhesiveare printed upon two of them. For this purpose I have shown reservoirsI9 and 2U for adhesive together with rolls turning therein, and transfermeans in the nature of rotary printing devices 2l and 22 which printupon the under surfaces of bag tubes 9a and Ito, areas of adhesive whichare discontinuous longitudinally of the bag tubes and spaced inwardly ofthe side edges of the bag tubes.

Such areas of adhesive are shown at 23 and 24 in Figures 2 and 3, andthey are so applied to the tubes as to be superposed when the tubesthemselves are superposed. The stacked and adhesively secured bag tubesrare cut oif in desired lengths by a fly knife 25. The result, as shownin Figures 2 and 3 is a composite liner structure 26v made up of threelongitudinally seamed bag tubes 8a, 9a and Ilia in superposedrelationship and held together by adhesive areas 23 and 24 so that thestructure may be handled as -a unit. Both the side edges and the endedges of the tubes are free as shown.

The composite liner structures 2t cut off by the fiy knife may bedelivered by a conveyor 2l and feed rolls 23 and 29. toa second sectionof the machine comprising a conveyor 3l] (e. g. of the chain and pintype) traveling at right angles to the conveyor 21.

It is within the scope of my practice to print adhesive upon the strips8, 9 and lil for the formation of transverse closures in the bag tubesand then so to cut off the composite liner structures 23 as to obtainthe tubes 8a, 9a and Illa in the form of bags closed at one end.However, and especially where the bag forming strips are made of, coatedwith or lined with a heat sealable material, it is more convenient andpreferable to effect closure of one end of the bag tubes after theformation of the composite structure 26; and this is readilyaccomplished because the ends of the bag tubes are free of each other ashas been indicated.

Thus, as shown in Figures 4, 5 and 6, an end of the upper bag tube Itamay be raised by a sword or deector 3l as the structure 26 is travelingupon conveyor 33, and closed and sealed in any suitable way, as byheated rollers 32. Further along, as in Figure 5, the end of tube 8a maybe deflected downwardly by a sword 33 and sealed by rolls 34. yStillfurther along, as in Figure 6, while the ends of the upper and lowertubes are still deflected by the swords 3l and 33 the end of theintermediate tube 9a may be closed and sealed by rolls 35. It will beunderstood that the mechanisms described or shown for the making of thecomposite liner structure 26 require to be driven in timed relationship.The timing is preferably made adjustable so that, along with suitablechanges in the adhesive printing devices and suitable changes in thetube formers as may be required, the mechanism may be set to producecomposite structures 26 of Various sizes as may be appropriate forvarious sizes of cartons. The material for the bag forming strips 8, il`and ID is not a limitation upon the invention.

In Figure '7, I have shown a carton blank having body walls 36, 3l, 38and 39 and a glue flap :it in articulation, To the ends of the bodywalls, or some of them, closure flaps are articulated. It will beunderstood that these closure ii-aps may take various forms appropriatefor various uses. Sets of tuck end flaps have been shown in Figure 7.The body walls Sii and 38 of the carton, as well as their flaps, areshown traversed by longitudinal scores il and 42, making the carton aso-called six sided structure.

One of the composite structures 25 is superposed upon the blank ofFigure 7 and the blank is tubed to form -aknocked down carton by bendingit along the score lines di and s2. The resultant structure isillustrated in Figure 8. In the course of the tubing operation adhesiveis applied to the carton blank so as to result in its interpositionbetween the glue ap it and the outer edge of the wall t. Also thecomposite structure 23 is preferably adhered to opposite walls 3l and 39of the carton blank which may be accomplished by applying adhesiveeither to the compositestructure 2o or to the said c-arton walls,illustrated at itl and l5 in Figures 9 and 10.

The composite structure 25 is chosen as to size in View of the size ofthe carton blank. Itr will be substantially longer than the length ofthe body walls of the carton, and long enough to permit not only thefolding of sealed portions of the liner without rupture, but also theultimate sealing of the uncl'osed ends of the bag tubes. It will benotedalso that the width of the composite liner structure 2S is greater thanthe width of the carton walls to which it is secured. Figures 9 and l0are cross-sectional views showing the carton in partially and fullysquared up condition and it will be noted that the several bag tubes areof such cross-sectional dimensions that after iirst expandingbellowwise, they finally ll up the interior of the carton forming cellspaces marked A, B and C in Figure 10. The dimensions of the liner tubesmaking up the composite liner 26 are also preferably chosen to be fullenough so that expanding contents will not rupture the bags within thecarton.

Mechanism for depositing preformed liners upon carton blanks, tubing theblanks about the liners and adhering the liners to a pair of oppositecarton walls has been set forth in one or more of my issued LettersPatent mentioned above and need not here be detailed.

Figure l1 is a perspective view of a lined` carton made in accordancewith this invention in erected condition and closed upon one end. Itshows open ends of liner bags Sa, 9a and Ita projecting at one end ofthe carto-n. These bags may now be filled and afterward the bags may 'beclosed individually either simultaneously or successively by closing andsealing means such as those shown in my said patents. The ends of theliner bags are free of each other and are free of the carton. They maybe sealed and individually folded as will be readily apparent. Also itwill be clear that they may be individually opened for the use ofportions of the contents of the carton, as may be required.

Referring to Figure 12, I have shown a somewhat different compositeliner structure wherein two liner tubes e3 and lli are arranged inoifset relationship lapping each other partially and adhered together inthe area of overlap as indicated at 45, the area of adhesive unionstopping short of the ends of the composite liner.

In Figure 13 I have shown a carton blank having enclosing body walls 46,41, 48 and 49 together with a glue flap 50 in articulation. A compositestructure 43, 44 is shown superposed upon this carton blank overlyingwalls 41 and 48. The blank is tubed about the composite liner structureby bending it upon the score lines adjacent walls 46 and 49. the glueflap 50 being adhered to the outer edge of wall 46, giving the structureshown in Figure 14. The composite liner 43, 44 is also preferablyadhered to the walls of the carton or to an opposite pair thereof by theapplication of adhesive either to the carton walls or to the linerstructure. In Figure 13 I have shown glue stripes 16, 11, 18 and 19applied to the-walls of the carton.

Figures 15 and 16 are cross-sectional views showing the carton of Figure14 in partially and fully erected or squared up condition and it willbenoted that the bag tubes or bags 43, 44 square up with the'carton toform interior cell spaces marked A and B.

The composite liner structure of Figure 12 may be made by the same typeof apparatus as that shown in Figures 1 to 6 inclusive, the backstands,adhesive applying devices and formers being laterally displaced fromeach other. While I have shown a composite liner structure 26 in FigureZand a composite liner structure 43, 44 in Figure 12 comprisingrespectively three and two tubes each, it will be understood -thateither of them may be made with two or more tubes as desired, additionalforming units being provided as additional tubes are required in thecomposite. The structure of Figure 12 may have its tubes sealed upon oneend prior to the formation of the lined carton as has been explained inconnection with Figures 4, and 6. But in the case of either composite,the closure and sealing of the ends of the bag tubes may be deferreduntil after the composite has been assembled to the car-ton blank.

In Figures 17 to 20 inclusive I have illustrated the formation of yetanother type of liner composite. In the mechanism of Figure 17, and upona frame 5i I have shown a backstand 52 supporting a roll 53 of bagforming material. Adhesive is applied to one edge of the strip 54 by aroll coater mechanism 55 or other suitable means. A former is located at56 for tubing the strip 54 and the tubed strip is indicated at 54a. Aroll coating mechanism 51 applies a continuous stripe of adhesive 51a tothe under side of ythe tube 54a.

At another position in the mechanism 'I provide a second backstand 58holding a roll 59 of bag forming material. 'Ihe strip 69 withdrawn fromthis roll is substantially wider than the strip 54. It is carriedupwardly and adhesive Bla is applied along one edge of it by a rollcoater device 6I or equivalent mechanism. Then the preformed andadhesive coated bag tube 54a is led against the center portion of thestrip 66 as they pass together over .a roll 62. A second former islocated in lthe machine at a pointA marked 63; and at this point theouter and wider strip is tubed over the preformed bag tube 54a, and isalso adhered centrally to .the upper side of the previously formed tube.

To this end I employ, as shown in Figure 18, a bifurcated forming sword64 having spaced portions 65 and 66 extending in the direction of motionof Ithe tubes. The preformed bag tube 54a passes beneath this formingsword. Adhesive 61a from a container 61 is applied by means of a seriesof rolls 68 to the upper side of the bag tube 54a. Thereafter bysuitable forming means (not shown but of the usual type) the strip 60 istubed about Ithe preformed tube 54a to form a bag tube 60a. drawn aheadby pinch rolls 69 and 10 and eut off into liner lengths by means of afly knife arrangement 1l.

The result, as shown in Figures 19 and 20, is a liner composite in whicha narrow bag tube 54a is enclosed within a wider bag tube 60a and isadhered to ittop and bottom by the lines of adhesive 51a and 61anarrower than the width of the flattened bag tube 54a.

Such a composite liner structure may be assembled to a liner blank whichis tubed thereabout and to which it is adhered as explained above. Whensuch a lined carton is squared up the bag tubes are likewise squared up,as shown in the cross-sectional view, Figure 20. Here the interior liner54a, provides a cell A while the outer liner 60a forms with the innerliner outlying cells B and C.

Since in the composite structure last described the bag tubes arecoterminous and one lies within the other, the liners are sealed as aunit as illustrated in Figure 21 Where the composite isv shown within acarton 12 and Ithe mouth of it is shown being sealed by heated rolls 13.Yet because the inner bag tube 54a is narrower than the outer bag tube69a any of the cell spaces A, B or C may be opened independently in thisstructure and its contents used without affecting the seal of other cellspaces.

The composite structure of Figures 19 and 20 may be made to have morecell spaces if desired by including two or more preformed narrow bagtubes within an outer, wider one. more of the composite struc-turesillustrated may be used as a liner for a single outer container. Yetagain, my composite liner structures are useful per se as multiple bagunits, and without the outer cartons with which I have illustrated them.This is especially true of the type of composite shown in Figures 19 and20 which used alone provides an outer bag containing one or more innerbags, the whole being divided into individual cell spaces. The outer bagmay be made very strong to withstand the stresses of shipment andhandling while the inner bag or bags may be of weaker material.

My invention is useful wherever it is desired to package a uniformmaterial in various increments so that one or more increments may beused while the remaining increments are still sealed and protected fromexternal conditions productive of loss of freshness, moisture, andchemical change and the like. But in the packaging of foodstuffs thereare many instances where diverse materials must be kept separate fromeach other though packaged in the same outer container and intended forconcurrent use. For example, it may be desired to package spaghetti ormacaroni along with cheese or other substances to form a dressingtherefor; or it may be desired to package noodles along with substancesderived from chicken meat. these circumstances, bags or cells ofdiiferent material may be required to give specific protection to theindividually differing substances as well as to keep them separate. Onecell of a composite structure may require moistureproofness as a primarycharacteristic while another may require oilor grease-proofness. Thus mycomposite structures, whether used alone or as liners, maybe made indifferent parts of dif- The composite structure is Underl ferentmaterials as will. be readily apparent, the diierences lyingv instrength, substance or pro.- tective characteristics. Among thematerials. which I mayuse, but without limitation thereto, I mentionplain or treated papers, non-nbrous. films of cellulosic or hydrocarbonsubstances, and metal foils, these substances being used alone or inplied layers as may be desired'.

Modifications may be made in my invention without departing from thespirit of it. Having thus described my invention in various exemplaryembodiments', what I claim as new and; desire to secure by LettersPatent is:

1. A prelined container in nat-folded form comprising a tubed outerboxboard carton having enclosing body walls. and end closure flaps, saidtubed cartonV having within it. a composite liner comprising a pluralityof tubular liner structures formed' of material morel nexible thanbox-board. said tubular liner structures being substantiaily coextensivein length and longer thanv theY body walls of said carton so as toproject beyond said` body walls at either end, said liner structuresbeing securedV to each other in areas lying within the confines of saidcarton body walls with the outermost liner structures additionallysecured to certain at least of the carton body Walls, the portions ofthe liner structures projecting beyond the ends of the carton being freeof the carton body Walls, whereby on expansion of the carton the saidliner structures will ibe concurrently exs panded, the combined crosssectional areas ci the expanded liner structures substantially equallingthe cross sectional area of the expanded carton.

2. A prelined container in flat-folded form com-Y prisingan outer tubedpaperboard carton having enclosing body walls and closure naps, saidtubed carton having within it a composite liner structure comprising atleast two individual tubu. lar liner members formed of material moreilexible than boxboard, said liner members being longer than the bodywalls of said carton so as to project beyond said body walls at eitherend, said liner members being in superposed relation and securedtogether within the confines of said carton in an area of less widththan either liner member, the outermost liner members beingvadditionally secured to opposite body Walls of said carton, Vtheportions of the liner members projecting beyond the ends of the cartonbody walls being free of each other and free of the carton walls,whereby said liner members may be both individually sealed andindividually opened and on expansion of the carton the said linerkmembers will be concurrently expanded, the combined cross sectionalareas of the expanded liner members substantially equalling the crosssectional area of the expanded carton.

3. A prelined container in flat-folded form comprising an outer tubedpaperboard carton having enclosing body Walls and closure flaps, saidcarton being tubed by folding upon a pair of score lines which arelocated intermediate the edges of two opposite body Walls, said tubedcarton havingwithin it a composite liner comprising at least twoindividual tubular liner struc tures formed of material more flexiblethan boxboard, said tubular liner structures being longer than the bodyWalls of said carton so as to project beyond Isaid body walls at eitherend, said liner structures being in superposed relation and securedtogether within the confines of said carton body walls in an area ofless width than either liner structure. the outermost liner structuresbeing additionally secured to opposite 8. body walls of said carton, theportions of the liner. structures. projecting beyond the ends of thecar-.ton body walls being free` of eachother and free of thecartonwallsrwhereby said liner structures may be both individuallysealedy and individuallyv opened and on expansion of the cerf ton thesaid. liner structures will be concurrently expanded, the combinedcross. sectional areas ot the. expanded liner structures. substantiallyequalling the crosssectional area of;V the expanded cartoni 4. Aprelined container in flat-folded form comprising an outer tubedboxboard. carton. having enclosing body walls and Closure eps., said.carton having withinV it a Composite liner comprisine an assembly ofindividual tubular liner structures formed o material more flexible thanboxboard', said tubular liner structures being longer than the bodywalls of said Carton s o as to project beyond said body Wallsv at eitherend, said liner structures being lapped in parallel vbut oilset relationand secured to each other inthe area of lappingg the outer edges of saidliner assembly being substantially coincident with folded edges of saidouter carton, with the outermost liner structures secured to oppositeenclosing body walls, said liner structures each being of a width, whendat, greater than the Width of said last mentioned opposite body Walls.said area of lapping being substantially equal to the width of saidopposite enclosing body Walls, whereby when said carton is erected saidliner structures are concurrently expanded, the coinbined crosssectional areas of the expanded liner structures substantially equallingthe cross sec-` tional area of the expanded carton..

5. A prelined, container in flat-folded form comprising an outer tubedboxboard carton ,have ing enclosing body Walls and closure flaps,y saidcarton being tubed by folding upon a pair of score lines which arelocated intermediate the edges of two opposite body walls, said tubedcarton having Within it a composite. liner structure comprising at leasttwo individual tubular liner structures formedof material more nexiblethan boxboard, said tubular liner structures being substantiallycoextensive in length and longer than the body walls of said carton soas to project beyond said body walls at either end, one of said linerstructures being relatively wide and the other relatively narrow withthe relatively narrow liner structure contained Wholly within the outerand relatively Wider liner structures and secured thereto along lines inopposite faces of said structures but narrower than said faces, saidouter liner structures being additionally Ysecured to a pair of oppositewalls of said carton, the portions of the liner structures projectingbeyond the ends of the carton being free of the. carton body Walls,whereby on expansion of the carton the said liner structure will beconcurrently expanded.

6. A prelined container in nat-folded form comprising a tubed outerboxboard carton having enclosing body walls and end closure flaps, saidtubed carton having within it a composite liner comprising a pluralityof tubular liner structures formed of material more flexible thanboxboard, said tubular liner structures being longer than the body wallsof said carton so as to project beyond said body walls at either end,said liner structures being secured to each other in areas lying Withinthe connes of said carton body walls with the outermost liner structuresadditionally secured to certain at least of the 9 carton body walls, theportions of the liner structures projecting beyond the ends of thecarton being free of the carton body walls, whereby on expansion of thecarton the said liner structures will be concurrently expanded, thecombined cross sectional area of the expanded liner structuressubstantially equaling the cross sectional area of the expanded carton.

ROBERT MORRIS BERGSTEIN.

REFERENCES CITED Number I0 UNITED STATES PATENTS Name Date BergsteinJuly 12, 1938 Gurwich Mar. 8. 1932 Lupton Aug. 28, 1934 Johannsen July30, 1935 Sodergren Oct. 1, 1935 Bergstein Nov. 16, 1937 Vogt Sept. 17,1940 Bergstein July 22, 1941 Wheeler May 9, 1944 Arthur Aug. 7, 1945Campagnano Mar. 4, 1947

